Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS4990116 A
Publication typeGrant
Application numberUS 07/371,119
Publication dateFeb 5, 1991
Filing dateJun 26, 1989
Priority dateJun 26, 1989
Fee statusLapsed
Also published asCN2076581U
Publication number07371119, 371119, US 4990116 A, US 4990116A, US-A-4990116, US4990116 A, US4990116A
InventorsTsan L. Chen
Original AssigneeChen Tsan L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Combining structure for toy blocks
US 4990116 A
Abstract
A combining structure for toy blocks, forming a cross-shaped tenon on the top surface of a single unit block and mortises in the bottom surface of the single unit block, the unit blocks able to be combined together one by one inserting the tenon of a block in the mortises of another block.
Images(4)
Previous page
Next page
Claims(1)
What is claimed is:
1. A combining structure for toy blocks, said combining structure comprising
a single unit block made of plastics,
at least two intersections formed by intersecting tenons on a top surface of said block,
a wall extending downward on each of four sides of said block,
at least one separate mortise in a bottom surface of each wall,
at least two openings defined by said four walls and at least one separation wall to separate said openings and the openings extending to an underside of the top surface having said tenons so that the tenons of other blocks having similar structure as said single block unit tightly stick within the mortises of said walls,
a number of said at least two openings being equal to a number of intersections of said intersecting tenons, and each separation wall between adjacent openings includes a mortise,
said single unit block being able to be combined together one by one with other blocks by inserting the tenons in the mortises.
Description
BACKGROUND OF THE INVENTION

Conventional toy blocks, "Lego" for example, are combined together one by one, by inserting protruding round posts on the top surface of a block in a round-holed protruding wall on the bottom surface of another block. The blocks are generally made of plastics, and the walls are liable to break and wear out because of their material so that blocks combined together often cannot hold tight together or can break, obliging a player to supplementally buy some blocks more.

SUMMARY OF THE INVENTION

The object of this invention is to provide a toy block having a cross-shaped tenon on the top surface of each square unit block and to from a mortise in the bottom surface of the four side walls of each square block, and said mortises can be tightly stuck in by the cross-shaped tenon. Besides, the central lines of the mortises can lap over those of the tenon and cross each other at the very center of the block. So the blocks can be combined together with one by one, with the tenons tightly sticking in the mortises.

BRIEF DESCRIPTION OF THE DRAWINGS

This invention will now be described in detail with reference to accormpanying drawings wherein;

FIG. 1 is a perspective view of a single unit block in accordance with the present invention;

FIG. 2 is an upside view of a single unit block in accordance with the present invention;

FIG. 3 is a front view of a single unit block in accordance with the present invention;

FIG. 4 is a bottom view of a single unit block in accordance with the present invention;

FIG. 5 is an upside view of a double unit block in accordance with the present invention;

FIG. 6 is a front view of a double unit block in accordance with the present invention;

FIG. 7 is a bottom view of a double unit block in accordance with the present invention;

FIG. 8 is an upside view of a quodruple unit block in accordance with the present invention;

FIG. 9 is a front view of a quodruple unit block in accordance with the present invention;

FIG. 10 is a bottom view of a quodruple unit block in accordance with the present invention;

FIG. 11 is an example of the blocks combined together in accordance with the present invention.

DETAILED DESCRIPTION OF THE INVENTION

At first, this combining structure is applied to a single unit block 1 as shown in FIGS. 1, 2, 3 and 4. The single unit block 1 made of plastics, shaped hollow square, is provided with a cross-shaped tenon 11 on the top surface and walls 12 of the same depth extending downward at four sides. Each wall 12 is provided with a mortise 13 in the bottom surface corresponding to the cross-shaped tenon 11 and able to be tightly stuck in by the cross-shaped tenon of another block. Besides, the central lines of the cross-shaped tenon lap over those of the four mortises 13 and cross each other at the very center of the block 1.

Next, this combining structure is applied to a double unit block 2 as shown in FIGS. 5, 6 and 7. The double unit block is just two times larger as the single unit block 1, so the lengthwise section of the cross-shaped tenon 21, is continuous. Walls 22 also extend downward at four sides and a continuous wall 24 is formed between the two single unit blocks, and walls 22 and the continuous wall 24 are of the same depth and provided with a mortise 23 corresponding to the cross-shaped tenon 21, which can tightly stick in the mortises 23. The central lines of the mortises 23 also lap over those of the tenon 21.

Next, this combining structure is applied to a quodruple unit block 3, which is provided with a tenon 31 shaped as four crosses put together two side by side, walls 32 extending downward at four sides, a continuous wall 34 as deep as the walls 32, and a mortise 33 in each wall 32 or 34, corresponding to the tenon 31 and able to be stuck in by the tenon 31 of another block. In addition, the central lines of the mortises 33 lap over those of the tenon 31.

The main feature of the combining structure in accordance with the present invention is that every block, whether it is a single unit, a double unit, or a quodruple unit, is provided with a cross-shaped tenon of the same width on the top surface and mortises in the bottom surface corresponding to the tenon and having the same width as the tenon to be stuck therein by the tenon so that blocks can be combined together one by one continuously by sticking the tenon in the mortises.

The advantage of this combining structure is that the contact dimension of the tenons with the mortises are rather large so that they hardly break or wear off.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1902136 *Jun 18, 1932Mar 21, 1933Mills Fred HToy building block
US2911818 *Nov 10, 1955Nov 10, 1959Charles SmithInterlocking building blocks
US3220141 *Jul 2, 1962Nov 30, 1965Halsam Products CompanyBuilding blocks connectable in slideable or non-slideable relationship
IT477823A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5647185 *May 14, 1996Jul 15, 1997Forlini; Emidio J.Structural blocks and assemblies thereof
US5676540 *Mar 19, 1996Oct 14, 1997Aluminum Company Of AmericaFlue walls using interlocking bricks
US5987840 *May 28, 1998Nov 23, 1999Leppert; Jeffrey K.Self-aligning block
US5993283 *Sep 30, 1997Nov 30, 1999Parvia CorporationModular buildings for a toy building set
US6386936May 8, 2000May 14, 2002Philippe GebaraBuilding block set
US6398458 *Oct 23, 2000Jun 4, 2002Designscape Enterprises Ltd.Mortarless retaining wall structure with improved lateral and longitudinal reinforcement for a vertical, set forward and/or set back retaining wall in whole or in part constructed by utilizing standardized blocks
US6467996 *Apr 8, 1999Oct 22, 2002Rapac, Inc.Polystyrene beads for drainage fields
US6477814 *Oct 17, 2000Nov 12, 2002Yoav KadoshModular interlocking framing elements
US6560934 *Apr 15, 2002May 13, 2003Deslauriers, Inc.Snappable shim assembly
US6578667 *Feb 23, 2001Jun 17, 2003The Boeing CompanyThrust reverser blocker door access platform
US7108577 *Dec 24, 2002Sep 19, 2006Peters Andrew JWedge-lock building blocks
US7472520 *Oct 25, 2005Jan 6, 2009Steve Eugene EverettStructural building block system and method comprising same
US8672584Aug 29, 2011Mar 18, 2014RapacDrainage beads
US20040118056 *Dec 24, 2002Jun 24, 2004Peters Andrew J.Wedge-lock building blocks
US20130330998 *Apr 11, 2013Dec 12, 2013Olivia FoxToy Building Block
USD731599 *May 28, 2014Jun 9, 2015Lego A/SPlate element for a construction set
WO1997035150A1 *Sep 20, 1996Sep 25, 1997Aluminum Co Of AmericaFlue walls using interlocking bricks
WO1999016525A1 *Aug 31, 1998Apr 8, 1999Parvia CorpModular buildings for a toy building set
WO2003074140A1 *Feb 26, 2003Sep 12, 2003Warchol PiotrWooden building blocks with coupling tongues
WO2005005008A1 *Jul 12, 2004Jan 20, 2005Kim Kwan-YoungAn assembling block
Classifications
U.S. Classification446/124, 52/592.6, 52/284
International ClassificationA63H33/08
Cooperative ClassificationA63H33/084
European ClassificationA63H33/08G
Legal Events
DateCodeEventDescription
Aug 4, 1994FPAYFee payment
Year of fee payment: 4
Sep 13, 1994REMIMaintenance fee reminder mailed
Feb 5, 2003LAPSLapse for failure to pay maintenance fees
Apr 1, 2003FPExpired due to failure to pay maintenance fee
Effective date: 20030205